User manual

6
Safety notices
Check the charge in batteries routinely, particularly
the receiver’s battery. Do not wait until the movements
of controlled mechanisms are noticeably slower.
Replace expended batteries before they cause prob-
lems.
The battery manufacturer’s charging instructions are
always to be followed, this includes mandatory ad-
herence to the length of charging time. Never leave
batteries being charged unattended.
Never attempt to charge primary batteries (non-re-
chargeable batteries) because they can explode.
All secondary batteries (rechargeable batteries) must
be charged before every session. To avoid short
circuit conditions, first connect the charger cable’s
banana plugs, polarity correct, into the charger and
thereafter connect the charger cable’s plugs to the
transmitter and receiver batteries.
Disconnect all power sources from the model when it
is not to be used for an extended period of time.
Never attempt to use defective batteries, damaged
batteries or mixed-type battery combinations as a sin-
gle group. Do not use mixed combinations of old and
new batteries or batteries of different manufacture.
Capacity and operating time
The rule: “capacity is reduced with every successive
recharging”, applies to all batteries. Internal resist-
ance increases at low temperatures to further reduce
capacity. As a consequence, the battery’s ability to
provide current and hold its voltage is reduced.
Frequent charging or the use of battery maintenance
programs can also result in gradual loss of battery
capacity. Therefore the capacity of batteries should
be checked at regular intervals, not in excess of every
six months, and replaced if performance is found to
be significantly deficient.
Purchase only genuine Graupner batteries!
Interference suppression for electric motors
All conventional electric motors produce sparks be-
tween their collector and brushes. Depending on the
type of motor involved, this may cause more or less
interference with the functionality of the remote con-
trol system.
The electric motors of a properly built system should
therefore have interference suppression features. For
electric drive models it is particularly important that
every one of its motors is provided with proper inter-
ference suppression. Interference filters extensively
suppress such disturbances and should always be
included.
Follow the respective recommendations included in
the motor’s operating and installation notices.
For further details about interference filters, refer to
the Graupner RC main catalog or in Internet at
www.graupner.de.
Servo interference filters for extension cables
Order no. 1040
The servo interference filter is necessary when an
extended-length servo cable is used. This filter is at-
tached directly to the receiver output. In critical cases
a second filter can be attached to the servo.
Using electronic speed controllers
Choosing the right electronic controller is largely a
matter of matching controller performance to the mo-
tor to be controlled.
In order to prevent an overload or damage to the
speed controller, its current rating should be at least
half of the maximum locked-rotor current draw of the
motor to which it is connected.
Particular attention is appropriate for so-called “tuning
motors”. Because of their low-turns coils these motors
can draw a multiple of their rated current in a locked-
rotor condition and this can lead to the destruction of
the speed controller.
Electric ignition systems
Combustion motor ignition systems also produce
interference that can negatively influence remote
control functionality.
Always supply power to an electric ignition system
from a separate, dedicated battery.
Use only interference-suppressed spark plugs, spark
caps and shielded ignition leads.
Mount the receiver sufficiently far away from ignition
system components.
Static charges
A remote control system will be destroyed by the
magnetic shock waves produced by a lightning
strike – even if the storm is miles away. Therefore …
… stop flying right away if a storm is approach-
ing. Static charging via the antenna also repre-
sents a lethal hazard.
Attention
• In order to fulfill FCC HF emission requirements
for mobile transmitters, a distance of at least 20 cm
must be maintained between this system’s anten-
na and other persons when this system is operat-
ing. Operation of this system at a lesser distance
is therefore not recommended.
• To avoid disturbance caused by the electrical
characteristics and emissions of other transmit-
ters, keep at least a 20 cm distance from other
transmitters.
• Operation of the remote control system requires a
correct program setting for the given country in the
transmitter unit. This is necessary for compliance
with diverse regulations like FCC, ETSI, CE etc.
Follow the respective instructions provided for this
with the transmitter and receiver.
• Prior to every flight, perform a complete functional
test, range test and execute a complete simulated
flight in order to exclude the possibility of system
faults or problems with the model’s programming.
• Never program the transmitter or receiver while
Safety notices